Interpreting the Constitution - Preamble

We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.

The Preamble provides us with the general purposes of the Constitution:

1. Form a more perfect Union: The United States were an organizational mess at the time.  As an example, they were using various forms of currency from many countries, each having a different exchange rate in each different state;
2. Establish Justice: Shay's rebellion alerted the nation to their need for a stronger central government.  The constitution provided this.  The Constitution outlines how justice will operate--it is establishing justice;
3. Insure domestic tranquility: Shay's rebellion. Protect the citizens at home from each other.
4. Provide for the common defence: Army, Navy, Air Force.  Protect the citizens from outside threats to our nation's sovereignty. 
5. Promote the general Welfare: This has nothing to do with giving government money to the poor and struggling, something that is completely outside the bounds of the Constitution.  We're talking infrastructure so that we can enjoy basic luxuries that can be expected by the citizenry of a civilized nation (roads, common currency, etc.);
6. Secure the Blessings of Liberty to ourselves and our Posterity: Not "give", but "secure" these blessings.  The constitution should keep us free, and keep our Posterity free.

In the majority of my arguments against different federal actions, I use this Preamble in my assertion that "this is unconstitutional!"  Any time the federal government involves itself in anything that cannot easily fall under the umbrella of one of these six purposes--we have trouble.

• Money for condoms in Africa? - Unconstitutional
• Aid to any country for any purpose? - Unconstitutional 
• Congressional resolution to congratulate the Super Bowl Champs? - Unconstitutional
• Congressional resolution to congratulate any person, for anything? - Unconstitutional 
• Money for PBS? - Unconstitutional
• Money for anything remotely related to entertainment? - Unconstitutional 
• Federal Lunch Program? - Unconstitutional
• The entire Federal Department of Education - Unconstitutional.
• Money to research sheep grazing strategies to reduce weeds? - Unconstitutional. 
• Money to "research" anything that does not relate to weapons for our military? - Unconstitutional

Okay, maybe some of those are a bit exaggerated.  On purpose.  But please!  Our government is grossly over-reaching in its Constitutional scope and responsibilities.  The purpose of government is not to find a solution for all our problems.  Keep me safe from physical harm (life), don't infringe on my freedoms (liberty), and make is reasonably easier for me to secure and own property by facilitating transportation of goods, services, monies, and people  (pursuit of happiness).  

Speaking to someone/anyone who leans liberal: please help moderate this post.  What am I missing?  Can we build on the common belief that the government is far too big in its scope?  Or do we already part ways in the opening paragraph of the Constitution?  

Next up: The Powers of Congress (that darn elastic clause!). . .